/* * linux/drivers/video/console/sticon.c - console driver using HP's STI firmware * * Copyright (C) 2000 Philipp Rumpf * Copyright (C) 2002 Helge Deller * * Based on linux/drivers/video/vgacon.c and linux/drivers/video/fbcon.c, * which were * * Created 28 Sep 1997 by Geert Uytterhoeven * Rewritten by Martin Mares , July 1998 * Copyright (C) 1991, 1992 Linus Torvalds * 1995 Jay Estabrook * Copyright (C) 1995 Geert Uytterhoeven * Copyright (C) 1993 Bjoern Brauel * Roman Hodek * Copyright (C) 1993 Hamish Macdonald * Greg Harp * Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk] * * with work by William Rucklidge (wjr@cs.cornell.edu) * Geert Uytterhoeven * Jes Sorensen (jds@kom.auc.dk) * Martin Apel * with work by Guenther Kelleter * Martin Schaller * Andreas Schwab * Emmanuel Marty (core@ggi-project.org) * Jakub Jelinek (jj@ultra.linux.cz) * Martin Mares * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of this archive for * more details. * */ #include #include #include #include #include #include #include #include #include #include "../fbdev/sticore.h" /* switching to graphics mode */ #define BLANK 0 static int vga_is_gfx; /* this is the sti_struct used for this console */ static struct sti_struct *sticon_sti; /* Software scrollback */ static unsigned long softback_buf, softback_curr; static unsigned long softback_in; static unsigned long /* softback_top, */ softback_end; static int softback_lines; /* software cursor */ static int cursor_drawn; #define CURSOR_DRAW_DELAY (1) #define DEFAULT_CURSOR_BLINK_RATE (20) static int vbl_cursor_cnt; static inline void cursor_undrawn(void) { vbl_cursor_cnt = 0; cursor_drawn = 0; } static const char *sticon_startup(void) { return "STI console"; } static void sticon_putc(struct vc_data *conp, int c, int ypos, int xpos) { int redraw_cursor = 0; if (vga_is_gfx || console_blanked) return; if (conp->vc_mode != KD_TEXT) return; #if 0 if ((p->cursor_x == xpos) && (p->cursor_y == ypos)) { cursor_undrawn(); redraw_cursor = 1; } #endif sti_putc(sticon_sti, c, ypos, xpos); if (redraw_cursor) vbl_cursor_cnt = CURSOR_DRAW_DELAY; } static void sticon_putcs(struct vc_data *conp, const unsigned short *s, int count, int ypos, int xpos) { int redraw_cursor = 0; if (vga_is_gfx || console_blanked) return; if (conp->vc_mode != KD_TEXT) return; #if 0 if ((p->cursor_y == ypos) && (xpos <= p->cursor_x) && (p->cursor_x < (xpos + count))) { cursor_undrawn(); redraw_cursor = 1; } #endif while (count--) { sti_putc(sticon_sti, scr_readw(s++), ypos, xpos++); } if (redraw_cursor) vbl_cursor_cnt = CURSOR_DRAW_DELAY; } static void sticon_cursor(struct vc_data *conp, int mode) { unsigned short car1; car1 = conp->vc_screenbuf[conp->vc_x + conp->vc_y * conp->vc_cols]; switch (mode) { case CM_ERASE: sti_putc(sticon_sti, car1, conp->vc_y, conp->vc_x); break; case CM_MOVE: case CM_DRAW: switch (conp->vc_cursor_type & 0x0f) { case CUR_UNDERLINE: case CUR_LOWER_THIRD: case CUR_LOWER_HALF: case CUR_TWO_THIRDS: case CUR_BLOCK: sti_putc(sticon_sti, (car1 & 255) + (0 << 8) + (7 << 11), conp->vc_y, conp->vc_x); break; } break; } } static bool sticon_scroll(struct vc_data *conp, unsigned int t, unsigned int b, enum con_scroll dir, unsigned int count) { struct sti_struct *sti = sticon_sti; if (vga_is_gfx) return false; sticon_cursor(conp, CM_ERASE); switch (dir) { case SM_UP: sti_bmove(sti, t + count, 0, t, 0, b - t - count, conp->vc_cols); sti_clear(sti, b - count, 0, count, conp->vc_cols, conp->vc_video_erase_char); break; case SM_DOWN: sti_bmove(sti, t, 0, t + count, 0, b - t - count, conp->vc_cols); sti_clear(sti, t, 0, count, conp->vc_cols, conp->vc_video_erase_char); break; } return false; } static void sticon_init(struct vc_data *c, int init) { struct sti_struct *sti = sticon_sti; int vc_cols, vc_rows; sti_set(sti, 0, 0, sti_onscreen_y(sti), sti_onscreen_x(sti), 0); vc_cols = sti_onscreen_x(sti) / sti->font_width; vc_rows = sti_onscreen_y(sti) / sti->font_height; c->vc_can_do_color = 1; if (init) { c->vc_cols = vc_cols; c->vc_rows = vc_rows; } else { /* vc_rows = (c->vc_rows > vc_rows) ? vc_rows : c->vc_rows; */ /* vc_cols = (c->vc_cols > vc_cols) ? vc_cols : c->vc_cols; */ vc_resize(c, vc_cols, vc_rows); /* vc_resize_con(vc_rows, vc_cols, c->vc_num); */ } } static void sticon_deinit(struct vc_data *c) { } static void sticon_clear(struct vc_data *conp, int sy, int sx, int height, int width) { if (!height || !width) return; sti_clear(sticon_sti, sy, sx, height, width, conp->vc_video_erase_char); } static int sticon_switch(struct vc_data *conp) { return 1; /* needs refreshing */ } static int sticon_set_origin(struct vc_data *conp) { return 0; } static int sticon_blank(struct vc_data *c, int blank, int mode_switch) { if (blank == 0) { if (mode_switch) vga_is_gfx = 0; return 1; } sticon_set_origin(c); sti_clear(sticon_sti, 0,0, c->vc_rows, c->vc_cols, BLANK); if (mode_switch) vga_is_gfx = 1; return 1; } static u16 *sticon_screen_pos(struct vc_data *conp, int offset) { int line; unsigned long p; if (conp->vc_num != fg_console || !softback_lines) return (u16 *)(conp->vc_origin + offset); line = offset / conp->vc_size_row; if (line >= softback_lines) return (u16 *)(conp->vc_origin + offset - softback_lines * conp->vc_size_row); p = softback_curr + offset; if (p >= softback_end) p += softback_buf - softback_end; return (u16 *)p; } static unsigned long sticon_getxy(struct vc_data *conp, unsigned long pos, int *px, int *py) { int x, y; unsigned long ret; if (pos >= conp->vc_origin && pos < conp->vc_scr_end) { unsigned long offset = (pos - conp->vc_origin) / 2; x = offset % conp->vc_cols; y = offset / conp->vc_cols; if (conp->vc_num == fg_console) y += softback_lines; ret = pos + (conp->vc_cols - x) * 2; } else if (conp->vc_num == fg_console && softback_lines) { unsigned long offset = pos - softback_curr; if (pos < softback_curr) offset += softback_end - softback_buf; offset /= 2; x = offset % conp->vc_cols; y = offset / conp->vc_cols; ret = pos + (conp->vc_cols - x) * 2; if (ret == softback_end) ret = softback_buf; if (ret == softback_in) ret = conp->vc_origin; } else { /* Should not happen */ x = y = 0; ret = conp->vc_origin; } if (px) *px = x; if (py) *py = y; return ret; } static u8 sticon_build_attr(struct vc_data *conp, u8 color, u8 intens, u8 blink, u8 underline, u8 reverse, u8 italic) { u8 fg = color & 7; u8 bg = (color & 0x70) >> 4; if (reverse) return (fg << 3) | bg; else return (bg << 3) | fg; } static void sticon_invert_region(struct vc_data *conp, u16 *p, int count) { int col = 1; /* vga_can_do_color; */ while (count--) { u16 a = scr_readw(p); if (col) a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | (((a) & 0x0700) << 4); else a = ((a & 0x0700) == 0x0100) ? 0x7000 : 0x7700; scr_writew(a, p++); } } static void sticon_save_screen(struct vc_data *conp) { } static const struct consw sti_con = { .owner = THIS_MODULE, .con_startup = sticon_startup, .con_init = sticon_init, .con_deinit = sticon_deinit, .con_clear = sticon_clear, .con_putc = sticon_putc, .con_putcs = sticon_putcs, .con_cursor = sticon_cursor, .con_scroll = sticon_scroll, .con_switch = sticon_switch, .con_blank = sticon_blank, .con_set_origin = sticon_set_origin, .con_save_screen = sticon_save_screen, .con_build_attr = sticon_build_attr, .con_invert_region = sticon_invert_region, .con_screen_pos = sticon_screen_pos, .con_getxy = sticon_getxy, }; static int __init sticonsole_init(void) { int err; /* already initialized ? */ if (sticon_sti) return 0; sticon_sti = sti_get_rom(0); if (!sticon_sti) return -ENODEV; if (conswitchp == &dummy_con) { printk(KERN_INFO "sticon: Initializing STI text console.\n"); console_lock(); err = do_take_over_console(&sti_con, 0, MAX_NR_CONSOLES - 1, 1); console_unlock(); return err; } return 0; } module_init(sticonsole_init); MODULE_LICENSE("GPL");